Book Image

Scratch Cookbook

By : Brandon Milonovich
Book Image

Scratch Cookbook

By: Brandon Milonovich

Overview of this book

Scratch 2.0 is an easy to use programming language that allows you to animate stories and create interactive games. Scratch also gives you the capability of using programming to calculate complicated calculations for you. Scratch Cookbook will lead you through easy-to-follow recipes that give you everything you need to become a more advanced programmer. Scratch Cookbook will take you through the essential features of Scratch. You'll then work through simple recipes to gain an understanding of the more advanced features of Scratch. You will learn how to create animations using Scratch. Sensory board integration (getting input from the outside environment) will also be covered, along with using Scratch to solve complicated and tedious calculations for you. You'll also learn how to work through the exciting process of project remixing where you build on the work of others. Scratch Cookbook will give you everything you need to get started with building your own programs in Scratch that involve sounds, animations, and user interaction.
Table of Contents (17 chapters)
Scratch Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Interactive note playing


In this recipe we are going to create a program that integrates many techniques we've used already in this book with the use of sounds. Specifically, we are going to create a program that asks the user for three notes to play and an instrument number. The program will then take the user input to play a tune.

Getting ready

Not much is required to get this recipe moving. First, open up a new Scratch file to use. You can customize the appearance through either picking a background or a new sprite if you'd like, though this is not necessary. Here we will work strictly with the default sprite and white background.

How to do it…

Follow these steps to get this recipe set:

  1. Create four new variables; name them First note, Second note, Third note, and Instrument.

  2. Drag over a new block and place it in the Script area.
  3. Below the top hat block you just dragged over, select the say () for () secs block from the Looks category.

  4. Replace the text in the block from step 3 to say I am going...